This is a fairly basic RPG, but don't let the simple rules deceive you. Read it. Understand that the rules, themselves, are written to build a horror mindset. Fighters are not noble, but bitter survivors of many battles. Wizards are meddling with things that can unravel reality. Dwarves are a bitter, dying race. Everything is written to create a dark, depressing mindset before you even start playing. Then your game master will send you forth into a terrible situation where things can only go downhill.

This book sets up the mindset of "not quite right, but pretty much guaranteed to go downhill."